Method for performing port configuration of 5G system for providing time synchronization service and network entity performing the same

Abstract

Provided are a method for performing port configuration of a 5G system (5GS) for providing a time synchronization service, and a network entity performing the same. A method for performing port configuration may include: when a grandmaster (GM) is determined to be a Time Sensitive Networking (TSN) GM outside the 5GS, performing, by a Network Exposure Function (NEF), port configuration of the 5GS in a Best Master Clock Algorithm (BMCA) scheme; and when the GM is determined to be a 5GS GM inside the 5GS, or the TSN GM outside the 5GS that does not support the BMCA, performing, by the NEF, port configuration of the 5GS in an external port configuration scheme.

What is claimed is: 
     
       1. A method for performing port configuration of a 5G system (5GS) for providing a time synchronization service, the method comprising:
 when a grandmaster (GM) is determined to be a Time Sensitive Networking (TSN) GM outside the 5GS, performing, by a Network Exposure Function (NEF), port configuration of the 5GS in a Best Master Clock Algorithm (BMCA) scheme; and 
 when the GM is determined to be a 5GS GM inside the 5GS, or the TSN GM outside the 5GS that does not support the BMCA, performing, by the NEF, port configuration of the 5GS in an external port configuration scheme. 
 
     
     
       2. The method according to  claim 1 , further comprising:
 when the NEF performs port configuration of the 5GS in the BMCA scheme, receiving, by the NEF, a BMCA result from a Network TSN Translator (NW-TT). 
 
     
     
       3. The method according to  claim 2 , further comprising:
 transmitting, by the NEF, a port configuration information and an Announce information to a Device Side TSN Translator (DS-TT) based on the BMCA result. 
 
     
     
       4. The method according to  claim 3 , wherein:
 the port configuration information and the Announce information are transmitted from the NEF to the DS-TT through a Port Management Information Container (PMIC) signaling. 
 
     
     
       5. The method according to  claim 3 , wherein:
 an Announce message according to the Announce information is created at a port configured as a master according to the BMCA result. 
 
     
     
       6. The method according to  claim 1 , further comprising:
 when the NEF performs port configuration of the 5GS in the external port configuration scheme, transmitting, by the NEF, a port configuration information and an Announce information to a NW-TT or a DS-TT. 
 
     
     
       7. The method according to  claim 6 , wherein:
 when the NEF transmits the port configuration information and the Announce information to the NW-TT, the port configuration information and the Announce information are transmitted through a Bridge Management Information Container (BMIC) signaling or a PMIC signaling. 
 
     
     
       8. The method according to  claim 6 , wherein:
 when the NEF transmits the port configuration information and the Announce information to the DS-TT, the port configuration information and the Announce information are transmitted through a PMIC signaling. 
 
     
     
       9. The method according to  claim 6 , wherein:
 an Announce message according to the Announce information is created at a port configured as a master according to the BMCA result. 
 
     
     
       10. A method for performing port configuration of a 5GS for providing a time synchronization service, the method comprising:
 when a GM is determined to be a TSN GM outside the 5GS, adding, by a NW-TT, a port configuration information to an Announce message based on a BMCA result; and 
 transmitting, by the NW-TT, the Announce message to a DS-TT. 
 
     
     
       11. The method according to  claim 10 , wherein:
 the Announce message is transmitted to another network entity at a port configured as a master according to the BMCA result. 
 
     
     
       12. A network entity performing port configuration of a 5GS for providing a time synchronization service, the network entity comprising:
 a network interface configured to transmit and receive data to and from other network entities; and 
 a processor configured to perform port configuration of the 5GS in a BMCA scheme when a GM is determined to be a TSN GM, and 
 perform port configuration of the 5GS in an external port configuration scheme when the GM is determined to be a 5GS GM inside the 5GS, or the TSN GM outside the 5GS that does not support the BMCA. 
 
     
     
       13. The network entity according to  claim 12 , wherein:
 when performing port configuration of the 5GS in the BMCA scheme, the processor receives a BMCA result from a NW-TT. 
 
     
     
       14. The network entity according to  claim 13 , wherein:
 based on the BMCA result, the processor transmits a port configuration information and an Announce information to a DS-TT. 
 
     
     
       15. The network entity according to  claim 14 , wherein:
 the port configuration information and the Announce information are transmitted from the NEF to the DS-TT through a PMIC signaling. 
 
     
     
       16. The network entity according to  claim 14 , wherein:
 an Announce message according to the Announce information is created at a port configured as a master according to the BMCA result. 
 
     
     
       17. The network entity according to  claim 12 , wherein:
 when the NEF performs port configuration of the 5GS in the external port configuration scheme, the processor transmits a port configuration information and an Announce information to a NW-TT or a DS-TT. 
 
     
     
       18. The network entity according to  claim 17 , wherein:
 when the NEF transmits the port configuration information and the Announce information to the NW-TT, the port configuration information and the Announce information are transmitted through a BMIC signaling or a PMIC signaling. 
 
     
     
       19. The network entity according to  claim 17 , wherein:
 when the NEF transmits the port configuration information and the Announce information to the DS-TT, the port configuration information and the Announce information are transmitted through a PMIC signaling. 
 
     
     
       20. The network entity according to  claim 17 , wherein:
 an Announce message according to the Announce information is created at a port configured as a master according to the BMCA result.